1. HH Sheikh Abdullah bin Khalifa Al Thani, a member of the Issuer's Board of Directors, is a director of Biolding Investment SA ("Biolding") and indirectly holds a majority of Biolding's outstanding shares, and as such, may be deemed to share voting and investment power over the securities held by Biolding. HH Sheikh Al Thani disclaims beneficial ownership of the Common Stock, except to the extent of his pecuniary interest therein.